Add API_BASE_URL as environment variable to template

Author: slobodan-proglove

lambda-durable-human-approval-sam/src/lambda_function.py

@@ -28,9 +28,10 @@ def lambda_handler(event, context: DurableContext):
     amount = body.get('amount', 0)
     description = body.get('description', 'No description')
 
-    # Get API Gateway URL from environment or construct it
-    region = os.environ.get('AWS_REGION', 'us-east-2')
-    api_base_url = f"https://w8a9tempjb.execute-api.{region}.amazonaws.com/prod"
+    # Get API Gateway URL from environment variable
+    api_base_url = os.environ.get('API_BASE_URL')
+    if not api_base_url:
+        raise ValueError("API_BASE_URL environment variable is not set")
 
     print(f"Starting approval workflow for request: {request_id}")
     print(f"API Base URL: {api_base_url}")

lambda-durable-human-approval-sam/template.yaml

@@ -68,6 +68,7 @@ Resources:
         Variables:
           APPROVAL_TOPIC_ARN: !Ref ApprovalTopic
           CALLBACK_TABLE_NAME: !Ref CallbackTable
+          API_BASE_URL: !Sub 'https://${ApprovalApi}.execute-api.${AWS::Region}.amazonaws.com/prod'
       Policies:
         - SNSPublishMessagePolicy:
             TopicName: !GetAtt ApprovalTopic.TopicName